Apparatus for making soy extracts.



PATENTED MAR. 28, 1905. T. SUZUKI. APPARATUS FOR MAKING SOY EXTRAGTS.

APPLIOATION FILED JULY 28, 1904.

3 SHEETS-SHEBT 1.

rayeizfivr 152a Zzum fluzukz) (9%/% I fa $474M PATENTED MAR. 28, 1905.

T. SUZUKI. APPARATUS FUR MAKING SOY EXTRAGTS.

APPLIOATION FILED JULY 28,1904.

3 SHEETS-SHEET 2.

. 152a 610:0 duz'uJcL' No. 785,776. PATENTED MAR. 28, 1905. T. SUZUKI.

APPARATUS FOR MAKING SOY EXTRAOTS. APPLICATION FILED JULY 28, 1904.

a SHEETS-SHEET 3.

162a6um duzukig Q "4 39 Q5 UNITED STATES Patented March 28, 1905.

PATENT OEEICE.

APPARATUS FOR MAKING SOY EXTRACTS- SPECIFICATION forming part of LettersPatent No. 785,776, dated March 28, 1905.

Application filed July 28, 1904;. Serial No: 218,486.

T all Hill/077D it wtcty concern-.-

Be it known that I, TOZABURO SUZUKI, a subject of the Emperor of Japan,residing at No. 101 Jibeishinden, Sunamura, county of Minumi Katsushika,Japan, have invented certain new and useful Improvements in Apparatusfor Manufacturing Soy Extracts and Condensing other Juices, of which thefollowing is a specification.

This invention relates to apparatus adapted to be used for evaporatingand condensing soy or other juices. Its objects are to condense thejuices at a low temperature in such amanner that there will be rapidevaporation without changing the original quality of thejuices.

A further object in the treatment of soy is' to remove the odors ofyeast and in the treatment of other j uices to accomplish thecondensation regularly and completely without the use of pumps, &c.

It consists in the combination of means for regularly stirring up andevaporating soy or other juices in a number of vacuum evaporating-pansof special construction and means for further evaporating and condensingthe juices in flat vessels placed in vacuum finishing-receptacles ofspecial construction.

In the accompanying drawings, illustrating this invention, Figure 1 is afront view of an apparatus embodying the same, parts being broken awayto show interior construction. Fig. 2 is a plan view of the apparatusshown in Fig. 1. Fig. 3 is a crosssectional view of one of the vacuumevaporating-pans. Fig. 4 is a longitudinal sectional view of the same.Fig. 5 is an end view, partly in section, of the vacuumfinishing-receptacle. Fig. 6 isa side elevation, partly in section, ofthe same; and Fig. 7 is a detail showing the method of connecting theheating-pipes in the vacuum finishing-receptacle.

The vacuum eyarmrating-pans A B C are all of the same construction andconsist of hermetically closed cylinders comprising body portions 1,front heads 2, and rear heads 3, as shown particularly in Figs. 3 and 4.The front head 2 is provided with a pressure-gage (6, thermometer a,water-gage (1. consistencytesting apparatus a and observation-Window aand air-conducting-valve 34. The pan is the gears 6.

also provided with an interior wall A to provide a chamber at in thebottom, in which steam or vapor may be admitted. The pans are providedat either end with centrallymounted bearings 5, which support ashaft 6,passing through the pan. These shafts are driven in any desired manner,as by means of Frames 9 are mounted on the shafts 6 within the pans.These frames carry brushes 7 and stirring-plates 8 and are also providedwith buckets 10 for carrying up the juice and pouring it back toward thecenter and other buckets, 11, for pouring down the ladled juice on theright side of the base D. Manholes 12 and discharge-holes 13 areprovided at the top of the pans. The discharge is provided with a hood21, preventing the discharge of the juice. The discharge is continuedthrough a discharge-pipe 20, provided with an enlarged base fittingoverthe hood 21 and connected to the top of the body or the drum. Thebearings 5 are provided with interior oil-chambers 15, which areconnected, by means of a pipe 19, with an oil-tank 16, a valve 17 beingprovided in the pipe 19 and a valve 18 in the pipe leading from saidoil-tank. The air-discharge pipe 20 from the first pan A and 120 fromthe second pan 1) are provided with second j nice-separating devices 22,which deflect the direction of the vapor and separate the juice, whichreturns to the original pans through pipes The evaporating-pan A isprovided with a juice-inlet pipe 2 1 for the continual supply of juice,which may be regulated by means of the cock 23. The bottom chamber ofthis pan is provided with a steam-inlet pipe from any convenient sourceof steam. The condensed water is discharged from a tube 26 into asteam-trap 27. The juice-discharge pipe 28 from the lower part of thepan A is connected with the juice-supply pipe 12a of the pan B and isprovided with a cock 123. The juice-discharge pipe 128 from the lowerpart of the evaporating-pan B is connected with the juice-conductingpipe 22A of the pan 0 and is provided with a cock 223. The

juice-discharge pipe 228 of the pan C is provided with a cock 323 and isconnected with juice-feeder pipes 31 and 131 of juice-reservoirs E andF, and these pipes are provided with cocks 30 and 130. The air-exhaustpipe' from the pan A is connected, by means of the separator 22, withthe pipe 125, which leads to the pan B. The pipe 120 from the pan B isconnected, by means of a similar separator 22, with the pipe 225, whichleads to the pan (J. The air-exhaust pipe 220 of the pan C is connectedwith a steam-condenser and an air-pump and is provided with aregulating-valve 33. The air-discharge pipes 126 and 226 are connectedwith the air-pump G and are provided with cocks 29 and 129.

Two frames H and I, somewhat lower than the frame D, are placed in frontof the latter and support hermetically-closed juicereservoirs E and F,which are provided at the upper parts with juice-inlet pipes 31 and 131,having cocks and 130. These reservoirs are also provided withwater-gages and have discharge-pipes 35 and 135 leading from the bottomsthereof to discharge the juices in the vessels 38, placed on the frameI. The pipes 35 and 135 are provided with cocks 32 and 132. Thereservoirs are provided at the top with air-suction pipes 37 and 137,having cocks 36 and 136, which connect reservoirs with the air-pump G.

The vacuum finishing-receptacle J consists of a hermeticallyclosed drum,comprising the body 41, with heads 42, and is divided into front andback compartments by a divisional wall 44. This receptacle is mounted ona suitable frame K. The receptacle is provided with a pressure-gage 7),a thermometer .7), observation-window b air-conducting valve 45, testingdevice 43, and manhole 46. The upper parts of the two chambers of thereceptacle are connected with the air-suction pipe 48, which is providedwith regulating-valves 47. This pipe leads to the air-pump G. In eachend of the receptacle are rows of shelves, formed of heat-transmittingpipes 7) These pipes are made to communicate with each other throughoutthe whole system of shelves, and iron plates are placed on the pipes toreceive the vessels 6, containing the juices.

The testing device 43 is a separate chamber. It may be placed incommunication with the interior of the receptacle J by means of thevalve 50, which is controlled by a handle 49, extending out through thewall of said receptacle. A vessel 38, placed in this chamber, may beremoved through the outer door without disturbing the operation withinthe receptacle.

The upper end of theheat-transmitting pipe from the vacuumfinishing-receptacle J is connected with the upper part of the water-"heater L by means of the pipe 51, while the lower end is connected withthe water-tank M by means of the water-discharge pipe 52. Thewater-heater L consists of a suitable drum having an interior spiraltube 53. The

drum is connected at the top with the pipe 51, as aforesaid, and at thebottom with a delivery-pipe 54, leading to a pump N, the water-suctiontube of said pump beingconneeted with the water-tank M. Thelower end ofthe spiral tube 53 is connected with the steam-discharge pipe of theengine 0, which operates the pump G, the upper end of said spiral beingopen to the atmosphere.

In order to manufacture soy extract or to condense other juices by meansof this apparatus, the cock 23 is opened and a suitable quantity ofjuice is admitted to the vacuum evaporating-pan A through the pipe 24,and steam is admitted from the steam-pipe 25 into the base-chamber 4 Thecocks 123 223 29 129 32 36 and the regulating-valves 33 are opened andthe air-pump G started. The airpump is connected by suitable means withthe gearing for driving the shafts 6, so that the latter are all drivensimultaneously. The steam admitted under the base 4 heats the juices inthe pan, and the water produced by condensation is discharged throughthe steamtrap 27. In this manner the juice becomes heated and completelyevaporated by being brought in contact with the left side of the base 4by means of the brush 7 and stirringplate 8 and as a result of beingsprinkled downward by bucket 10 and by being poured upon the entiresurface of the right side of the base 4 by the bucket 11. The interiorof pan B being of lower pressure than that of the pan A, the juice,which is more or less condensed in the latter, will make its wayinto thepan B through the discharge-pipe 28 and through the conducting-pipe 124.The vapor in the pan A is more or less mixed with juice, which will beseparated by the separator 22, and the vapor will enter under the base 4of the pan B from the upper conducting-pipe 125 and heat this pan. Thusthe operation of evaporation is repeated in the pan B just as in the panA. A similar operation takes place between the pan B and the pan 0, andthe juice that has become gradually concentrated by passing through thesteam-pans A, B, and C will enter the juice-receptacle E from thejuice-discharge pipe 228 from the conductingpipe 31. Then the gage 40indicates that the juice has almost filled the receptacle E, the cocks30 and 36 are closed, and the juice is then conducted into thereceptacle F by opening the cocks 130 and 136, while the juice in thepan C is conducted through the discharge-pipe 35 into the vessel 38,placed on the frame I. These vessels will then be placed in rows on theshelves in the vacuum finishing-receptacle J. The receptacle is thenclosed and the valves 47 opened, so that the interior of the pan isexhausted by means of the air-pump. The pump N forces the water from thetank M through the delivery-pipe 54 to the waterheater L, where itbecomes heated, and then passes through the pipe 51 to theheat-transmitting pipes that form the shelves in the receptacle J. Afterpassing through these pipes the water returns to the tank M through thedischarge-tube 52. The heat Within the receptacle J will be transmittedto the vessels 38 and cause a moderate evaporation of the juicescontained therein. WV hen the degree of concentration is judgedsutficient by examining it by means of the testing device, theregulating-valve 47 is closed, and air is admitted into the receptacle Jthrough the valve 45, and the vessels 38 are then taken out through themanhole 46. When a suitable quantity of juice is collected in thejuice-receptacle F, the evaporation, as above described, will beperformed in the opposite end of the receptacle J The arrangement issuch that the two chambers in the vacuum finishing-chamber J may be usedalternately. In general the albuminous substance of soy is immediatelyseparated and coagulated after it is somewhat condensed and it has beensubjected to a heat of over 40 centigrade, so that no complete extractretaining the original quality of soy has hitherto been in vogue.

By means of the present invention a juice containing even a largepercentage of water can be quickly evaporated by subjecting it to thehigh temperature in the vacuum steam-pan A, and as evaporation can begradually effected by lowering the temperature and pressure no change iscaused in the ingredients or in the essential quality of the originaljuice by the concentration. Therefore this invention is perfectlyadapted for manufacturing extracts of soy or condensing other juices.Moreover, the action of evaporation is facilitated by constantly ladlingthe juice and sprinkling it downward in the vacuum operatingpan and bydischarging it on all of the heated portion. Any excessive heating andincrustation of the juice in the bottom is prevented, as the heatedparts are constantly be ing swept by the brush. This apparatus isespecially effectual for removing the odor of yeast ot' the soy. Theutilization of heat in the pans B and O is obtained by utilizing thevapor from the pans A and B, while the heat in the vacuumtinishingreceptacle J comes from the waste steam of the pump. Theoperation-is also simple, and no trouble is required except in supplyingand discharging the juice in the vacuum finishing-pan. By dividing thelatter into front and back compartments and by providing thejuice-receptacles E and F, capable of being used alternately, constantand continual operation can be performed. Consequently I have provided anovel and useful apparatus.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-- 1. An apparatus for manufacturing soy extractand condensing other juices, comprising a primary evaporating-pan, meansfor heating said pan by steam, means for stirring the juices-in saidpan, a second evaporating-pan of lower pressure than the first pan,means for utilizing vapor from the first pan as the source of heat fromthe second pan, means for stirring the juices in the second pan, a thirdvacuum evaporating-pan of lower pressure than the second pan, and meansfor heating the third pan by using the vapor from the second pan as thesource of heat, and a vacuum finishing-receptacle adapted to be heatedby warm water, and means within said receptacle for receiving vesselsfilled with the juice to be evaporated, and means for evacuating saidfinishing-receptacle.

2. An apparatus of the character set forth, comprising a plurality ofvacuum evaporatingpans, vacuum juice-receptacles adapted to receive thejuice from the last of said pans, a

vacuum finishing-receptacle, an air-pump connected with saidfinishing-receptacle, and said pans for exhausting the same, and meansfor heating said vacuum-pans and said vacuum finishing-receptacle.

3. An evaporating device, comprising a cylindrical drum provided with adouble bottom, means for introducing steam into the chamber formed bysaid double bottom, means for introducing the liquid to be evaporatedinto the main portion of said cylinder, amotary stirring device in saidcylinder, a brush on said device, said cylinder having an airexhaustoutlet and a hood over said outlet to prevent the discharge of thefiuid.

4:. The combination of a plurality of vacuum evaporating-pans, means forheating the first of said pans, means for introducing the fluid to becondensed into the first of said pans, an air-exhaust pipe from thefirst of said pans leading to the heating-chamber of the second pan, afluid-separator in said exhaust-pipe, a pipe for conducting thepartially-evaporated fluid from the first pan to the evaporatingchamberof the second pan, similar connections between the second pan and thethird pan, means for exhausting the air from said third pan, receptaclesfor receiving the condensed fluid and means for alternately dischargingthe fluid into said receptacles.

5. A vacuum evaporating finishing-receptacle comprising a closedcylinder dividedinto two sections, shelves in said sections formed ofconnected pipes adapted to be heated from a source of heat-supply,fluid-containing vessels adapted to be inserted on said shelves andmeans for exhausting the air from either of said chambers.

In testimony whereof I afiix my signature in presence of two witnesses.

TOZABURO SUZUKI.

lVitnesses:

R. S. MILLER, U. IsHIwARAs.

